Update: My apologies. Shipping is $6.99 (unless your cart total exceeds $49), and you may have to pony up sales tax as well. Still a good deal considering the $39.99 regular price, but not as attractive as I'd initially thought. My mistake, though I'm blaming the kid across the aisle who will NOT STOP SCREAMING.

As you can see from the photo (which shows the red version), this mouse is a looker. But it's also cleverly designed, folding to 60 percent of its regular size. That makes it a good choice for travelers, but it's also large enough for comfortable desktop use.

The Arc relies on a wireless USB receiver and runs on a pair of AAA batteries.

I haven't tried the mouse myself, but I know a few people who are ga-ga over it. CNET's Rich Brown rated it 3.5 stars out of 5 and praised its unique appearance, collapsible design, and easy setup. My current travel mouse is pretty crummy; I might just have to snag one of these!

Usual disclaimer: I have no idea how long Dell will be offering the Arc at this price. Could be a week, could be an hour.